<template>
  <view class="xl-rtc-container">
    <!-- 视频区域 -->
    <view class="video-area" :class="{'fullscreen': isFullscreen}">
      <view class="main-video">
        <view v-if="!localStream" class="camera-placeholder">
          <text class="placeholder-icon">📷</text>
          <text class="placeholder-text">等待开启摄像头</text>
        </view>
        <video 
          v-else 
          id="localVideo" 
          class="video-element" 
          :src="localStreamUrl" 
          autoplay 
          muted
          object-fit="cover"
        ></video>
        
        <!-- 美颜控制按钮 -->
        <view v-if="localStream" class="beauty-controls">
          <view class="beauty-item" @click="toggleBeauty">
            <text class="beauty-icon">✨</text>
            <text class="beauty-text">{{ beautyEnabled ? '美颜开' : '美颜关' }}</text>
          </view>
          <view class="beauty-item" @click="toggleBackground">
            <text class="beauty-icon">🖼️</text>
            <text class="beauty-text">{{ virtualBgEnabled ? '背景开' : '背景关' }}</text>
          </view>
        </view>
      </view>
      
      <!-- 远程视频区域 -->
      <scroll-view 
        v-if="remoteStreams.length > 0" 
        class="remote-videos" 
        scroll-x="true"
      >
        <view 
          v-for="(stream, index) in remoteStreams" 
          :key="stream.id"
          class="remote-video-item"
          @click="switchMainVideo(index)"
        >
          <video 
            :id="`remoteVideo_${index}`" 
            class="video-element" 
            :src="stream.url" 
            autoplay
            object-fit="cover"
          ></video>
          <view class="remote-user-info">
            <text class="remote-user-name">{{ stream.userName || `用户${index + 1}` }}</text>
          </view>
        </view>
      </scroll-view>
      
      <!-- 通话控制按钮 -->
      <view class="call-controls">
        <view class="control-btn" :class="{'active': micEnabled}" @click="toggleMic">
          <text class="control-icon">{{ micEnabled ? '🎙️' : '🔇' }}</text>
          <text class="control-text">麦克风</text>
        </view>
        <view class="control-btn" :class="{'active': cameraEnabled}" @click="toggleCamera">
          <text class="control-icon">{{ cameraEnabled ? '📹' : '📵' }}</text>
          <text class="control-text">摄像头</text>
        </view>
        <view class="control-btn" @click="toggleScreen">
          <text class="control-icon">📊</text>
          <text class="control-text">共享屏幕</text>
        </view>
        <view class="control-btn" @click="toggleFullscreen">
          <text class="control-icon">🔍</text>
          <text class="control-text">{{ isFullscreen ? '退出全屏' : '全屏' }}</text>
        </view>
        <view class="control-btn end-call" @click="endCall">
          <text class="control-icon">📞</text>
          <text class="control-text">结束</text>
        </view>
      </view>
    </view>
    
    <!-- 通话质量监控面板 -->
    <view v-if="showQualityPanel" class="quality-panel">
      <view class="panel-header">
        <text class="panel-title">通话质量监控</text>
        <text class="panel-close" @click="toggleQualityPanel">×</text>
      </view>
      <view class="quality-items">
        <view class="quality-item">
          <text class="quality-label">延迟</text>
          <text class="quality-value" :class="getLatencyClass()">{{ stats.latency }}ms</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">丢包率</text>
          <text class="quality-value" :class="getPacketLossClass()">{{ stats.packetLoss }}%</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">网络抖动</text>
          <text class="quality-value" :class="getJitterClass()">{{ stats.jitter }}ms</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">分辨率</text>
          <text class="quality-value">{{ stats.resolution }}</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">帧率</text>
          <text class="quality-value">{{ stats.frameRate }}fps</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">音频码率</text>
          <text class="quality-value">{{ (stats.audioBitrate / 1000).toFixed(1) }}kbps</text>
        </view>
        <view class="quality-item">
          <text class="quality-label">视频码率</text>
          <text class="quality-value">{{ (stats.videoBitrate / 1000).toFixed(0) }}kbps</text>
        </view>
      </view>
      
      <!-- 网络强度指示器 -->
      <view class="network-indicator">
        <text class="indicator-label">网络状况:</text>
        <view class="signal-bars">
          <view 
            v-for="i in 5" 
            :key="i"
            class="signal-bar" 
            :class="{'active': i <= getNetworkQualityLevel()}"
          ></view>
        </view>
        <text class="indicator-text">{{ getNetworkQualityText() }}</text>
      </view>
    </view>
    
    <!-- 房间信息和参会者 -->
    <view class="room-info">
      <view class="room-header">
        <text class="room-name">房间: {{ roomId || '未加入房间' }}</text>
        <view class="quality-btn" @click="toggleQualityPanel">
          <text class="quality-icon">📊</text>
          <text class="quality-text">质量监控</text>
        </view>
      </view>
      <view class="participants">
        <text class="participant-count">参会人数: {{ remoteStreams.length + 1 }}</text>
      </view>
    </view>

    <!-- 连接控制面板 -->
    <view v-if="!isInRoom" class="connect-panel">
      <view class="panel-content">
        <input 
          type="text" 
          v-model="roomId" 
          placeholder="请输入房间号" 
          class="room-input"
        />
        <input 
          type="text" 
          v-model="userName" 
          placeholder="请输入您的名称" 
          class="name-input"
        />
        <button class="connect-btn" @click="joinRoom">加入房间</button>
      </view>
    </view>
  </view>
</template>

<script setup>
import { ref, computed, onMounted, onBeforeUnmount } from 'vue';

// Props定义
const props = defineProps({
  // 初始房间号
  initialRoomId: {
    type: String,
    default: ''
  },
  // 用户名
  initialUserName: {
    type: String,
    default: ''
  },
  // 自动加入房间
  autoJoin: {
    type: Boolean,
    default: false
  },
  // 视频质量 (low, medium, high, hd)
  videoQuality: {
    type: String,
    default: 'medium'
  },
  // 允许美颜
  enableBeauty: {
    type: Boolean,
    default: true
  },
  // 允许虚拟背景
  enableVirtualBackground: {
    type: Boolean,
    default: true
  }
});

// 事件定义
const emit = defineEmits([
  'room-joined', 
  'room-left', 
  'mic-changed', 
  'camera-changed', 
  'screen-share-changed',
  'fullscreen-changed',
  'main-video-changed',
  'beauty-changed', 
  'virtual-background-changed'
]);

// 反应式状态
const roomId = ref(props.initialRoomId);
const userName = ref(props.initialUserName);
const isInRoom = ref(false);
const localStream = ref(null);
const localStreamUrl = ref('');
const remoteStreams = ref([]);
const micEnabled = ref(true);
const cameraEnabled = ref(true);
const isFullscreen = ref(false);
const showQualityPanel = ref(false);
const beautyEnabled = ref(false);
const virtualBgEnabled = ref(false);
const stats = ref({
  latency: 0,
  packetLoss: 0,
  jitter: 0,
  resolution: '0×0',
  frameRate: 0,
  audioBitrate: 0,
  videoBitrate: 0
});
const rtcConnection = ref(null);
let statInterval = null;
const beautyProcessor = ref(null);
const virtualBgProcessor = ref(null);

// 检查浏览器兼容性
const checkCompatibility = () => {
  // 实际实现中应检查WebRTC支持
  // 模拟实现
  const isCompatible = true;
  
  if (!isCompatible) {
    uni.showToast({
      title: '您的浏览器不支持WebRTC',
      icon: 'none',
      duration: 3000
    });
  }
};

// 加入房间
const joinRoom = () => {
  if (!roomId.value) {
    uni.showToast({
      title: '请输入房间号',
      icon: 'none'
    });
    return;
  }
  
  if (!userName.value) {
    uni.showToast({
      title: '请输入您的名称',
      icon: 'none'
    });
    return;
  }
  
  // 模拟加入房间的过程
  uni.showLoading({
    title: '正在加入房间...'
  });
  
  // 模拟获取本地媒体流
  setTimeout(() => {
    // 模拟本地流URL(实际项目中应使用getUserMedia)
    localStream.value = true;
    localStreamUrl.value = '/static/demo-video.mp4'; // 实际使用中应使用真实流
    
    // 模拟远程用户(实际项目中应通过信令服务器连接)
    remoteStreams.value = [
      { id: 'user1', url: '/static/demo-video.mp4', userName: '用户A' },
      { id: 'user2', url: '/static/demo-video.mp4', userName: '用户B' },
    ];
    
    isInRoom.value = true;
    
    uni.hideLoading();
    
    emit('room-joined', {
      roomId: roomId.value,
      userName: userName.value
    });
    
    // 初始化RTCPeerConnection
    initRTCConnection();
  }, 1000);
};

// 初始化RTCPeerConnection
const initRTCConnection = () => {
  // 实际项目中应初始化WebRTC连接
  rtcConnection.value = {}; // 模拟对象
  
  // 设置ICE服务器(STUN/TURN)
  // 实现信令机制
  // 处理ICE候选项
  // 设置SDP交换
  
  // 初始化美颜处理器(如果启用)
  if (props.enableBeauty) {
    initBeautyProcessor();
  }
  
  // 初始化虚拟背景处理器(如果启用)
  if (props.enableVirtualBackground) {
    initVirtualBackgroundProcessor();
  }
};

// 离开房间
const leaveRoom = () => {
  if (!isInRoom.value) return;
  
  // 关闭连接
  if (rtcConnection.value) {
    // 实际项目中应关闭RTCPeerConnection
    rtcConnection.value = null;
  }
  
  // 关闭本地流
  localStream.value = null;
  localStreamUrl.value = '';
  
  // 清空远程流
  remoteStreams.value = [];
  
  // 重置状态
  isInRoom.value = false;
  
  emit('room-left', {
    roomId: roomId.value
  });
  
  // 关闭美颜和虚拟背景处理
  beautyEnabled.value = false;
  virtualBgEnabled.value = false;
  
  if (beautyProcessor.value) {
    // 实际项目中应释放处理器资源
    beautyProcessor.value = null;
  }
  
  if (virtualBgProcessor.value) {
    // 实际项目中应释放处理器资源
    virtualBgProcessor.value = null;
  }
};

// 结束通话
const endCall = () => {
  uni.showModal({
    title: '结束通话',
    content: '确定要结束当前通话吗？',
    success: (res) => {
      if (res.confirm) {
        leaveRoom();
      }
    }
  });
};

// 开关麦克风
const toggleMic = () => {
  micEnabled.value = !micEnabled.value;
  
  // 实际项目中应控制音频轨道
  // if (localStream.value && localStream.value.getAudioTracks().length > 0) {
  //   localStream.value.getAudioTracks()[0].enabled = micEnabled.value;
  // }
  
  emit('mic-changed', micEnabled.value);
};

// 开关摄像头
const toggleCamera = () => {
  cameraEnabled.value = !cameraEnabled.value;
  
  // 实际项目中应控制视频轨道
  // if (localStream.value && localStream.value.getVideoTracks().length > 0) {
  //   localStream.value.getVideoTracks()[0].enabled = cameraEnabled.value;
  // }
  
  emit('camera-changed', cameraEnabled.value);
};

// 开关屏幕共享
const toggleScreen = () => {
  // 实际项目中应使用getDisplayMedia API
  uni.showToast({
    title: '屏幕共享功能演示',
    icon: 'none'
  });
  
  emit('screen-share-changed', true);
};

// 开关全屏
const toggleFullscreen = () => {
  isFullscreen.value = !isFullscreen.value;
  
  emit('fullscreen-changed', isFullscreen.value);
};

// 切换主视频
const switchMainVideo = (index) => {
  if (index < 0 || index >= remoteStreams.value.length) return;
  
  // 交换本地和远程视频
  const temp = localStreamUrl.value;
  localStreamUrl.value = remoteStreams.value[index].url;
  
  // 更新远程流列表(实际应该有更复杂的逻辑)
  const updatedStreams = [...remoteStreams.value];
  updatedStreams[index].url = temp;
  remoteStreams.value = updatedStreams;
  
  emit('main-video-changed', index);
};

// 开关质量监控面板
const toggleQualityPanel = () => {
  showQualityPanel.value = !showQualityPanel.value;
};

// 初始化美颜处理器
const initBeautyProcessor = () => {
  // 模拟初始化美颜处理器
  beautyProcessor.value = {}; // 实际项目中应初始化真实处理器
};

// 初始化虚拟背景处理器
const initVirtualBackgroundProcessor = () => {
  // 模拟初始化虚拟背景处理器
  virtualBgProcessor.value = {}; // 实际项目中应初始化真实处理器
};

// 切换美颜效果
const toggleBeauty = () => {
  if (!props.enableBeauty) return;
  
  beautyEnabled.value = !beautyEnabled.value;
  
  // 实际项目中应用美颜效果
  if (beautyEnabled.value) {
    // 应用美颜
  } else {
    // 移除美颜
  }
  
  emit('beauty-changed', beautyEnabled.value);
};

// 切换虚拟背景
const toggleBackground = () => {
  if (!props.enableVirtualBackground) return;
  
  virtualBgEnabled.value = !virtualBgEnabled.value;
  
  // 实际项目中应用虚拟背景效果
  if (virtualBgEnabled.value) {
    // 应用虚拟背景
  } else {
    // 移除虚拟背景
  }
  
  emit('virtual-background-changed', virtualBgEnabled.value);
};

// 开始模拟统计数据(实际项目中应使用WebRTC统计API)
const startStatsSimulation = () => {
  statInterval = setInterval(() => {
    // 模拟网络波动
    stats.value.latency = 50 + Math.floor(Math.random() * 150); // 50-200ms
    stats.value.packetLoss = Math.random() * 5; // 0-5%
    stats.value.jitter = 5 + Math.floor(Math.random() * 20); // 5-25ms
    stats.value.resolution = '1280×720';
    stats.value.frameRate = 25 + Math.floor(Math.random() * 5); // 25-30fps
    stats.value.audioBitrate = 30000 + Math.random() * 10000; // 30-40 kbps
    stats.value.videoBitrate = 500000 + Math.random() * 300000; // 500-800 kbps
  }, 1000);
};

// 清除统计间隔
const clearStatsInterval = () => {
  if (statInterval) {
    clearInterval(statInterval);
    statInterval = null;
  }
};

// 获取延迟等级样式
const getLatencyClass = () => {
  if (stats.value.latency < 100) return 'quality-good';
  if (stats.value.latency < 200) return 'quality-medium';
  return 'quality-bad';
};

// 获取丢包率等级样式
const getPacketLossClass = () => {
  if (stats.value.packetLoss < 1) return 'quality-good';
  if (stats.value.packetLoss < 3) return 'quality-medium';
  return 'quality-bad';
};

// 获取抖动等级样式
const getJitterClass = () => {
  if (stats.value.jitter < 10) return 'quality-good';
  if (stats.value.jitter < 20) return 'quality-medium';
  return 'quality-bad';
};

// 获取网络质量等级(1-5)
const getNetworkQualityLevel = () => {
  // 根据延迟、丢包率和抖动综合计算
  const latencyScore = stats.value.latency < 100 ? 2 : (stats.value.latency < 200 ? 1 : 0);
  const lossScore = stats.value.packetLoss < 1 ? 2 : (stats.value.packetLoss < 3 ? 1 : 0);
  const jitterScore = stats.value.jitter < 10 ? 1 : (stats.value.jitter < 20 ? 0.5 : 0);
  
  const totalScore = latencyScore + lossScore + jitterScore;
  
  // 转换为1-5等级
  if (totalScore >= 4.5) return 5;
  if (totalScore >= 3.5) return 4;
  if (totalScore >= 2.5) return 3;
  if (totalScore >= 1.5) return 2;
  return 1;
};

// 获取网络质量文本
const getNetworkQualityText = () => {
  const level = getNetworkQualityLevel();
  const texts = ['极差', '差', '一般', '良好', '优秀'];
  return texts[level - 1];
};

// 提供给外部使用的接口
defineExpose({
  joinRoom,
  leaveRoom,
  toggleMic,
  toggleCamera,
  toggleScreen,
  toggleFullscreen,
  toggleBeauty,
  toggleBackground,
  // 设置虚拟背景
  setVirtualBackground: (options) => {
    if (virtualBgProcessor.value) {
      // 实际项目中的实现逻辑
      console.log('设置虚拟背景:', options);
      // 启用虚拟背景
      virtualBgEnabled.value = true;
      emit('virtual-background-changed', true);
    }
  },
  // 设置美颜参数
  setBeautyOptions: (options) => {
    if (beautyProcessor.value) {
      // 实际项目中的实现逻辑
      console.log('设置美颜参数:', options);
      // 启用美颜
      beautyEnabled.value = true;
      emit('beauty-changed', true);
    }
  }
});

// 生命周期
onMounted(() => {
  // 检查浏览器兼容性
  checkCompatibility();
  
  // 如果autoJoin为true且有房间号，自动加入
  if (props.autoJoin && roomId.value) {
    joinRoom();
  }
  
  // 模拟统计数据(实际项目中应替换为WebRTC统计API)
  startStatsSimulation();
});

onBeforeUnmount(() => {
  leaveRoom();
  clearStatsInterval();
});
</script>

<style lang="scss">
.xl-rtc-container {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #f5f5f5;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  
  .video-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-radius: 12rpx;
    overflow: hidden;
    background-color: #000;
    position: relative;
    
    &.fullscreen {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      z-index: 999;
    }
    
    .main-video {
      flex: 1;
      position: relative;
      width: 100%;
      
      .video-element {
        width: 100%;
        height: 100%;
        background-color: #000;
      }
      
      .camera-placeholder {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 100%;
        height: 100%;
        background-color: #333;
        
        .placeholder-icon {
          font-size: 80rpx;
          margin-bottom: 20rpx;
          color: #fff;
        }
        
        .placeholder-text {
          font-size: 28rpx;
          color: #ddd;
        }
      }
      
      .beauty-controls {
        position: absolute;
        top: 20rpx;
        right: 20rpx;
        display: flex;
        flex-direction: column;
        
        .beauty-item {
          display: flex;
          align-items: center;
          background-color: rgba(0, 0, 0, 0.5);
          padding: 10rpx 16rpx;
          border-radius: 30rpx;
          margin-bottom: 15rpx;
          
          .beauty-icon {
            font-size: 32rpx;
            margin-right: 10rpx;
          }
          
          .beauty-text {
            font-size: 24rpx;
            color: #fff;
          }
        }
      }
    }
    
    .remote-videos {
      height: 180rpx;
      white-space: nowrap;
      background-color: #111;
      padding: 10rpx;
      
      .remote-video-item {
        display: inline-block;
        width: 220rpx;
        height: 160rpx;
        margin-right: 10rpx;
        border-radius: 8rpx;
        overflow: hidden;
        position: relative;
        background-color: #333;
        
        .video-element {
          width: 100%;
          height: 100%;
        }
        
        .remote-user-info {
          position: absolute;
          bottom: 0;
          left: 0;
          right: 0;
          background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
          padding: 5rpx 10rpx;
          
          .remote-user-name {
            font-size: 20rpx;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
          }
        }
      }
    }
    
    .call-controls {
      display: flex;
      justify-content: space-around;
      padding: 20rpx;
      background-color: #111;
      
      .control-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        
        .control-icon {
          font-size: 44rpx;
          margin-bottom: 10rpx;
        }
        
        .control-text {
          font-size: 24rpx;
          color: #fff;
        }
        
        &.active {
          .control-text {
            color: #4cd964;
          }
        }
        
        &.end-call {
          .control-icon {
            color: #ff3b30;
          }
          
          .control-text {
            color: #ff3b30;
          }
        }
      }
    }
  }
  
  .quality-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 400rpx;
    background-color: rgba(0, 0, 0, 0.8);
    border-radius: 0 0 0 12rpx;
    z-index: 100;
    
    .panel-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15rpx 20rpx;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      
      .panel-title {
        font-size: 28rpx;
        color: #fff;
        font-weight: bold;
      }
      
      .panel-close {
        font-size: 36rpx;
        color: #fff;
        padding: 0 10rpx;
      }
    }
    
    .quality-items {
      padding: 15rpx 20rpx;
      
      .quality-item {
        display: flex;
        justify-content: space-between;
        margin-bottom: 12rpx;
        
        .quality-label {
          font-size: 24rpx;
          color: #ccc;
        }
        
        .quality-value {
          font-size: 24rpx;
          color: #fff;
          
          &.quality-good {
            color: #4cd964;
          }
          
          &.quality-medium {
            color: #ff9500;
          }
          
          &.quality-bad {
            color: #ff3b30;
          }
        }
      }
    }
    
    .network-indicator {
      display: flex;
      align-items: center;
      padding: 15rpx 20rpx;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      
      .indicator-label {
        font-size: 24rpx;
        color: #ccc;
        margin-right: 15rpx;
      }
      
      .signal-bars {
        display: flex;
        align-items: flex-end;
        height: 30rpx;
        margin-right: 15rpx;
        
        .signal-bar {
          width: 8rpx;
          height: 6rpx;
          margin-right: 4rpx;
          background-color: rgba(255, 255, 255, 0.3);
          border-radius: 1rpx;
          
          &:nth-child(1) { height: 6rpx; }
          &:nth-child(2) { height: 12rpx; }
          &:nth-child(3) { height: 18rpx; }
          &:nth-child(4) { height: 24rpx; }
          &:nth-child(5) { height: 30rpx; }
          
          &.active {
            background-color: #4cd964;
          }
        }
      }
      
      .indicator-text {
        font-size: 24rpx;
        color: #fff;
      }
    }
  }
  
  .room-info {
    padding: 20rpx;
    background-color: #fff;
    border-radius: 12rpx;
    margin-top: 15rpx;
    
    .room-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10rpx;
      
      .room-name {
        font-size: 28rpx;
        font-weight: bold;
        color: #333;
      }
      
      .quality-btn {
        display: flex;
        align-items: center;
        background-color: #f0f0f0;
        padding: 6rpx 15rpx;
        border-radius: 30rpx;
        
        .quality-icon {
          font-size: 28rpx;
          margin-right: 8rpx;
        }
        
        .quality-text {
          font-size: 24rpx;
          color: #666;
        }
      }
    }
    
    .participants {
      .participant-count {
        font-size: 24rpx;
        color: #666;
      }
    }
  }
  
  .connect-panel {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
    
    .panel-content {
      width: 80%;
      background-color: #fff;
      border-radius: 12rpx;
      padding: 40rpx;
      
      .room-input, .name-input {
        width: 90%;
        height: 80rpx;
        border: 1px solid #eee;
        border-radius: 8rpx;
        padding: 0 20rpx;
        margin-bottom: 30rpx;
        font-size: 28rpx;
      }
      
      .connect-btn {
        width: 100%;
        height: 80rpx;
        line-height: 80rpx;
        background-color: #007aff;
        color: #fff;
        border-radius: 8rpx;
        font-size: 28rpx;
      }
    }
  }
}
</style> 